ost-survey.pl (OST performance survey) ====================================== This script is designed to test the client-to-disk performance of the individual OSTs in a Lustre filesystem. The network transfer time from the client is included; to get a better idea of the isolated disk perfomance, run this script on a client running on the OST. Syntax: $ ost-survey [-h] [-s ] where -s : size in MB -h : help : mount point of lustre client Assumptions - Lustre filesystem is up and running - Script is being run on a client plot-ost.pl (OST survey graph) ====================================== The plot-ost.pl script can be used to plot the results from the ost-survey script using gnuplot. Syntax: $ ost-survey /mnt/lustre > ost_log $ plot-ost.pl ost_log Some sample test results: Ost# Read(MB/s) Write(MB/s) Read-time Write-time ---------------------------------------------------- 0 12.080 18.382 2.483 1.632 Local Firewire IDE 1 15.043 43.289 1.994 0.693 Local IDE 2 22.546 25.252 1.331 1.188 Local loopback 0 8.896 17.370 3.372 1.727 GigE to above disks